Final answer:
Sarah's deepening voice and increased muscle mass are characteristic of adolescence, the puberty-related stage where secondary sexual characteristics develop due to increased levels of testosterone in males.
so the correct answer is Option C) Adolescence
Step-by-step explanation:
The changes that Sarah is experiencing, where his voice is becoming deeper and his muscles are getting bigger, illustrate the puberty-related term adolescence. During puberty, primary and secondary sexual characteristics develop and mature. In males, the presence of testosterone stimulates physical changes such as the growth of facial, axillary, and pubic hair, increased muscle mass, and the deepening of the voice. These are known as secondary sexual characteristics, as they do not directly involve the sex organs. These changes occur during adolescence, which is the transitional stage from childhood to adulthood characterized by physical and psychological development. None of the other terms listed (menopause, andropause, menarche) correctly describe this stage in development, as they refer to different aspects of the reproductive lifecycle.
the correct answer is Option C